Articles | Volume 16, issue 20
Biogeosciences, 16, 3997–4021, 2019
https://doi.org/10.5194/bg-16-3997-2019
Biogeosciences, 16, 3997–4021, 2019
https://doi.org/10.5194/bg-16-3997-2019

Research article 17 Oct 2019

Research article | 17 Oct 2019

N2O changes from the Last Glacial Maximum to the preindustrial – Part 1: Quantitative reconstruction of terrestrial and marine emissions using N2O stable isotopes in ice cores

Hubertus Fischer et al.

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Short summary
N2O concentrations were subject to strong variations accompanying glacial–interglacial but also rapid climate changes over the last 21 kyr. The sources of these N2O changes can be identified by measuring the isotopic composition of N2O in ice cores and using the distinct isotopic composition of terrestrial and marine N2O. We show that both marine and terrestrial sources increased from the last glacial to the Holocene but that only terrestrial emissions responded quickly to rapid climate changes.
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